Overseas App API Integration & API Services

Our Service Overview

We are a technical studio focused on App interface integration and authorization API implementation, with long-standing experience in fintech, brokerage and wallet projects. We provide a one-stop service from protocol analysis, interface refactoring, Open Data integration, to third-party channel connectivity and automated scripts plus API documentation delivery. All work is based on client authorization or public/authorized APIs, strictly following compliance and privacy requirements.

Functional Implementations for Target Apps

The following are typical interface implementations and delivery points based on the target App names you provided. Each item can include runnable source code, OpenAPI documentation, and test collections.

• BMoney - Saham & Reksadana: Implement account holdings and fund NAV lookup, historical transaction export, real-time/delayed quotes subscription, automated valuation scripts, and authorized order/subscription interface adaptation. Supports local currency conversion, cost-basis calculation, and scheduled investing tasks (cron) delivery examples.
• Cardnix: Card management and payment channel: card binding, card status queries, transaction retrieval, reconciliation and refunds processing. Uses secure storage (HSM/encrypted KV) and signing strategies, supports Webhook asynchronous notifications and transaction retry strategies.
• TCInvest: Coverage: broker login authentication (multi-factor), real-time quotes (WebSocket) and tick-by-tick trades, order placement, cancellation, order status pushes and funds/broker reconciliation module. For overseas brokers adapt to local regulatory fields and deliver Postman collection and sample frontend calls.
• OCA-OPTION Chain Analysis: Implement options chain scraping, Greeks calculation (Delta/Gamma/Vega/Theta), hierarchical screening strategies, implied volatility curves export (CSV/JSON). Provide reusable data pipelines (ETL) and scheduled analysis report endpoints, support backtest data integration and API metrics output.
• Bold: For asset management or neo-bank type products, implement account and product catalog APIs, purchase/redemption workflows, yields and fee calculations, push and notification system integration, and compliant audit logs and data retention solutions.
• Intesa Sanpaolo Investo: PSD2/XS2A compliant integration for EU: Account Information Services (AIS) and Payment Initiation Services (PIS) adaptation, OAuth2/OpenID Connect flows, sensitive data tiered storage, and cross-border exchange rate API integration.

Delivery Contents (Standard Package)

• runnable sample code (Node.js / Python / Java optional)
• OpenAPI/Swagger standard documentation + Postman collection
• Authentication & security notes (OAuth2, JWT, TLS, signing) and example configurations
• Automated test scripts, data export/import samples and reconciliation scripts
• Deployment guidance, operations scripts, and compliance suggestions (including local regulatory summaries)

Technical & Compliance Highlights

• Protocol-first: work proceeds only with client authorization or public APIs; conduct protocol analysis and interface abstraction, avoiding intrusive operations; data extraction only under compliance
• Security design: end-to-end TLS, key management, signing mechanisms, and desensitization of sensitive fields; supports enterprise-grade HSM integration
• Real-time and batch: WebSocket/Server-Sent Events for real-time quotes; batch processing/ETL for historical data and report generation
• Multi-currency and localization: support multi-currency units, local time/market holidays handling, and multilingual output
• Compliance guidance: provide actionable recommendations and parameter mappings for EU/Italy PSD2 and local/regulatory requirements in Southeast Asia

Service Process & Timeline

1. Requirements confirmation: provide target App name and concrete needs (functions, data scope, authorization method).
2. Feasibility assessment: protocol/API availability, compliance constraints, technical solution plan (1-3 business days).
3. Development & delivery: API implementation, docs and test sets (typically 5-12 business days depending on complexity).
4. Acceptance & deployment: integration testing, fixes and handover of run scripts and documentation.

Pricing & Assurance

• Transparent starting price: base service from $300; final pricing based on workload and compliance needs.
• First-delivery with acceptance: optional to deliver initial version first; payment after client acceptance.
• Compliance commitment: work only with client authorization or based on public/authorized APIs; NDA available.

FAQ

1) If I only provide the App name, can you start working?

Yes. We will conduct feasibility assessment based on the target App's authorized APIs and public data sources, and request a list of required authorizations (e.g., API keys, merchant certificates, test accounts).

2) Do you support multi-platform samples (Android/iOS/backend)?

Yes. Deliverables include standardized backend API sources and sample frontend/mobile call snippets for rapid cross-platform integration.

3) Will reverse engineering or non-compliant methods be involved?

No. We avoid improper practices (such as unauthorized reverse engineering); all work is based on client authorization, public APIs, or third-party authorized channels, in compliance with laws and platform policies.

Contact Us

For inquiries, quotes, or to submit the target App name and requirements, please click the button below to access the contact page:

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Service Tags

App API integration | Investment App integration | Options chain analysis API | Broker order placement API | Payments & Card channels | Open Data integration | PSD2 compliance | Automated scripts | API documentation delivery